Ammonia-generator.



A. E. Bossfi. AMMONIA GENERATOR. APPLIGATION'IILED MAR.25, 1910.

Patented Jan; 9, 1912.

awsimple and eflicient device for use as a near Aroma-1n Bossn, or rirrsnunen, PENNSYLVANIA, AS$IGNOR ro norm nnraie- To all vhom it may concern: I

Be it knownithat I, AnoLPrcn E; Bossii, a

citizen of the United States, residing at ,P ttsburgh, inthe. county of Allegheny and State of Pennsylvania, have invented certa nnew and useful Improvements in Ammonia Generators, of which the following is a specification.

My. invention relates to a generator for .use in absorptionrefrigerating systems and in such connection it has particular relation to the construction and arrangement of a device for liberating and absorbing the ammonia gas of the aqua ammonia used in such refrigerating systems. i

The object of m invention is to provide combined generator and absorber in ammonia absorption refrigerating systems.

My invention v contemplates .means for heating the aqua ammonia, as well as means for cooling said solution, contained within the same structure, whereby the generator may also act as an absorber thus obviating thenecessityof a separate device for this purpose, to the end that the entire refrigcrating system may be -simplified:

The nature and characteristic features of my invention stood. from: the following description taken .will be more readily underinconnection with the accompanying drawings forming part hereof, in which Figure 1 is a vertical longitudinal section or a generator and absorber embodying the main features of my present invention; and Fig. 2 is a transverse section thereof.

Referring to the drawings, 3 is the casing or shell ofithe generator and absorber, preferably of cylindrical shape with its longitudinal axis arranged horizontally.

4 is a coil of pipe arranged below the cenj tral axis of the casing through which steam .or any other heating agent may be'passed Y 'to thereby heat the contained liquor and thus drive ofi the ammonia gas at the proper time in the use of the apparatus.

5-is a coil of pipe arranged above the steam coil 4: through which water or. any other cooling agent may be circulated to reduce the temperature of the contained liquor at the proper time in the operation of the apparatus.

6 is an outlet pipe for the passage of the liberated ammonia gas into the refrigerating 'time, it may be naa rme conrniw; A oonroaarron or DELAWARE.

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Pwi d o team rat-eaten Jan. rare. 1 Application filed mar 25, 1910 Serial No. 551,439. i i

system, said pipe 6 communicating with the interior of the casing 3 at the top thereof.

7 is the inlet pipe for the return of the usedammonia gas from the refrigerating system, which pipe 7 is preferably perforated along its under surface to more thoroughly distribute the ammonia gas as the same returns to the generator and absorber to be reabsorbed by the liquor contained therein.

It should be noted that the steam coil l: is so located below the central axis of the generator. as to be at all times subn'iergcd beneath the surface of the contained liquor notwithstanding the diminution in volume of said liquor as theammonia gas is driven off therefrom.

The operation of the device is as follows: Starting with the aqua ammonia contained within the generator in its condition of greatest strength, steam is admitted to the coil a :whereby the aqua ammonia will be heated and the gas driven off therefrtm. The gas passes from the generator 3 through the pipe 6 into the condenser of the refrigerating system wherein it is first cooled to be thereby liquefied while retaining the pressure due to the high temperature of the liquor contained within the generator 3. As

is well known in the art the liquefied am? monia may be collected in a suitable con tainer or receiver from which, at the proper permitted to pass through an expansion valve into the cooling coils'of thev refrigerating system. It should be understood that the driving off of the ammonia gas from the aqua ammonia contained within the generator 3 occurs in a certain period in the cycle of operations and that the expansion of the liquefied ammonia oc ours in another period of the cycle of opera tions during which latter period the ammonia gas which has expanded and thereby lost its pressure isreturned to the generator 3 by means of the perforated return pipe 7 arranged in the bottom of said generator.

It should be noted that by making the casing or shell 3 of the generator cylindrical in shape with its longitudinal axis arranged horizontally andby superposing the cooling coil over the heating coil in the manner shown and described, the heating coil will at all times be submerged notwithstanding the changes in volume of ,the contained liquor as the ammonia gas is periodically driven oil and reabsorbed, so that the heat from the steam passing through the heating coil will be conserved to the fullest extent. Furthermore by the central arrangement of the cooling coil, the samevwill be located at the place of greatest horizontal width of the generatorand consequently may be made of such size as to adequately effect the cooling of the liquor While the absorption is taking place; it being understood that the portion of said cooling coil which may extend above the level of the contained liquor will in no Wise interfere with the absorption operation.

Having thus described the nature and characteristic features of my invention What I claim as new and desire to secure by Letters Patent is 4 1. An ammonia generator comprising a cylindrlcal casing arranged with its longitudinal axis horizontal, a cooling coil centrally arranged within said casing, and a heating coil arranged beneath said cooling coil in the lower part of. said casing.

v 2. An ammonia generator comprising a cylindrical casing arranged with its longitudinal axis horizontal, a cooling coil centrally arranged within said casing, a heating coil arranged beneath said cooling coil in the lower part of said'casing, an outlet pipe communicating withthe upper part of said casin and an inlet for the ammonia gas at the owerpart of the said casing.

In testimony whereof I have hereunto signed my name in the presence of two Witnesses.

ADOLPHE E. BOSSE. Witnesses T. E. REU'roR, Jr., W. D. MCBRYAR. 

